<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>2007-4298</journal-id>
<journal-title><![CDATA[Botanical Sciences]]></journal-title>
<abbrev-journal-title><![CDATA[Bot. sci]]></abbrev-journal-title>
<issn>2007-4298</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Botánica de México A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-42982018000200366</article-id>
<article-id pub-id-type="doi">10.17129/botsci.1928</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[The Yucatan Peninsula is the place of origin of sisal (Agave sisalana, Asparagaceae): historical accounts, phytogeography and current populations]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Trejo-Torres]]></surname>
<given-names><![CDATA[Jorge C.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gann]]></surname>
<given-names><![CDATA[George D.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Christenhusz]]></surname>
<given-names><![CDATA[Maarten J.M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,The Institute for Regional Conservation  ]]></institution>
<addr-line><![CDATA[Delray Beach Florida]]></addr-line>
<country>USA</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Plant Gateway  ]]></institution>
<addr-line><![CDATA[Bradford ]]></addr-line>
<country>UK</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2018</year>
</pub-date>
<volume>96</volume>
<numero>2</numero>
<fpage>366</fpage>
<lpage>379</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-42982018000200366&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-42982018000200366&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-42982018000200366&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Background. Agave sisalana is a cultigen from Mexico. In 1833 it was brought to Florida by Henry Perrine as an experimental crop. From there it was introduced to tropical Africa and Asia in the late 19th Century, where it became established as a fiber crop. Paradoxically, in the Yucatan it meanwhile evanesced from its already scanty presence. Because material was collected from cultivated stock in Chiapas in the 1950s and a neotype from there was selected in 1988, it was assumed to have originated in Chiapas.  Questions. Did A. sisalana originate in the Yucatan Peninsula following Perrine (1838a, 1938b) rather than from Chiapas sensu Gentry (1988)?  Studied species. Agave sisalana (sisal), one of the strongest natural fibers in the world and a commercially important crop.  Study site and dates.  Live plants were located in the Yucatan between 2013&#8211;2017.  Methods. We document historical and current presences of A. sisalana in the Yucatan Peninsula following three lines of evidence: 1) overlooked records and reports in literature; 2) herbarium specimens; and 3) presence of extant populations.  Results.  Eleven localities in the Yucatan Peninsula still have extant populations of sisal. We uncovered herbarium specimens from the region, including an original specimen by Perrine, from Campeche, which is selected as the lectotype for the name, superseding the neotype from Chiapas.  Conclusion.  We demonstrate the continued presence of Agave sisalana in the Yucatan Peninsula, even though it has now become rare. It is most likely that the crop was first domesticated there.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Antecedentes. Agave sisalana es un cultígeno de México. En 1833 lo llevó a Florida por Henry Perrine como un cultivo experimental. De ahí fue introducido a África tropical y Asia a finales del siglo XIX, donde se estableció como un cultivo de fibras. Mientras tanto, paradójicamente, en Yucatán evaneció de su ya escasa presencia. Debido a que se recolectó material cultivado en Chiapas en los 1950s y se designó un neotipo de ahí, se asumió que tuvo origen chiapaneco.  Preguntas.  ¿Se originó A. sisalana en la Península de Yucatán de acuerdo a Perrine (1838a, 1938b) en vez de Chiapas sensu Gentry (1988)?  Especie estudiada. Agave sisalana (sisal), una de las fibras naturales más fuertes del mundo y cultivo comercial importante.  Sitio de estudio y fechas.  Se localizaron plantas vivas en Yucatán entre 2013&#8211;2017.  Métodos.  Se documentaron presencias históricas y actuales de Agave sisalana en la Península de Yucatán siguiendo tres líneas de evidencia: 1) registros y reportes ignorados en la literatura; 2) especímenes de herbario; y 3) presencia de poblaciones existentes.  Resultados.  Once localidades en la Península de Yucatán tienen aún poblaciones existentes de sisal. Se descubrieron especímenes de herbario de la región, incluyendo un espécimen original de Perrine, de Campeche, el cual se seleccionó como lectotipo para el nombre, remplazando al neotipo de Chiapas.  Conclusión.  Se demostró la presencia continua de Agave sisalana en la Península de Yucatán, aun cuando hoy día se ha vuelto rara. Es muy probable que el cultivo se domesticó por primera vez ahí.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[cultigen]]></kwd>
<kwd lng="en"><![CDATA[economic botany]]></kwd>
<kwd lng="en"><![CDATA[ethnobotany]]></kwd>
<kwd lng="en"><![CDATA[fiber crops]]></kwd>
<kwd lng="en"><![CDATA[henequen]]></kwd>
<kwd lng="en"><![CDATA[nomenclature]]></kwd>
<kwd lng="es"><![CDATA[botánica económica]]></kwd>
<kwd lng="es"><![CDATA[cultígeno]]></kwd>
<kwd lng="es"><![CDATA[cultivos de fibras]]></kwd>
<kwd lng="es"><![CDATA[etnobotánica]]></kwd>
<kwd lng="es"><![CDATA[henequén]]></kwd>
<kwd lng="es"><![CDATA[nomenclatura]]></kwd>
</kwd-group>
</article-meta>
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